unsigned timeout_ms;
unsigned count;
unsigned oneattime;
-} opt = {
+ char *file;
+ char *histogram_fn;
+};
+
+struct options opt = {
.id = 10,
.period_us = 0,
.timeout_ms = 1000,
-
+
};
int num_interfaces = 0;
+int count = 0; /* Number of sent messages */
struct msg_info {
canid_t id;
#define MAX_INFOS 10000
struct msg_info msg_infos[MAX_INFOS];
-uint16_t curr_msg = 0;
+
+struct histogram histogram;
static inline struct msg_info *frame2info(struct can_frame *frame)
{
{
struct timespec diff;
void *local = talloc_new (NULL);
-
+
#define S(ts) tstamp_str(local, &ts)
#define DIFF(a, b) (timespec_subtract(&diff, &b, &a), S(diff))
-
- if (num_interfaces == 2)
+
+ if (num_interfaces == 2)
printf("%s -> %s (%s) = %s (%s)\n",
S(mi->ts_sent), S(mi->ts_rx_final_kern), S(mi->ts_rx_final),
- DIFF(mi->ts_sent, mi->ts_rx_onwire_kern),
- DIFF(mi->ts_sent, mi->ts_rx_onwire));
+ DIFF(mi->ts_sent, mi->ts_rx_final_kern),
+ DIFF(mi->ts_sent, mi->ts_rx_final));
else
printf("%s -> %s (%s) -> %s (%s) = %s (%s), %s (%s)\n",
S(mi->ts_sent),
/* Subtract the `struct timespec' values X and Y, storing the result in
RESULT. Return 1 if the difference is negative, otherwise 0. */
-
+
int timespec_subtract (struct timespec *result, struct timespec *x, struct timespec *yy)
{
struct timespec ylocal = *yy, *y = &ylocal;
y->tv_nsec += 1000000000 * nsec;
y->tv_sec -= nsec;
}
-
+
/* Compute the time remaining to wait.
`tv_nsec' is certainly positive. */
result->tv_sec = x->tv_sec - y->tv_sec;
result->tv_nsec = x->tv_nsec - y->tv_nsec;
-
+
/* Return 1 if result is negative. */
return x->tv_sec < y->tv_sec;
}
printf("%s sec=%ld nsec=%ld\n", msg, tv->tv_sec, tv->tv_nsec);
}
+static inline unsigned get_msg_latency_us(struct msg_info *mi)
+{
+ struct timespec diff;
+ if (num_interfaces == 3)
+ timespec_subtract(&diff, &mi->ts_rx_final_kern, &mi->ts_rx_onwire_kern);
+ else
+ timespec_subtract(&diff, &mi->ts_rx_final_kern, &mi->ts_sent);
+ return diff.tv_sec * 1000000 + diff.tv_nsec/1000;
+}
+
void set_sched_policy_and_prio(int policy, int rtprio)
{
struct sched_param scheduling_parameters;
{
struct ifreq ifr;
MEMSET_ZERO(ifr);
-
+
strcpy(ifr.ifr_name, if_name);
if (ioctl(s, SIOCGIFINDEX, &ifr) < 0)
error(1, errno, "SIOCGIFINDEX '%s'", if_name);
struct can_frame frame;
struct msg_info *mi;
int ret;
+ static int curr_msg = -1;
+ int i;
+ uint16_t idx;
+
+ i = curr_msg+1;
+ while (msg_infos[i].id != 0 && i != curr_msg) {
+ i++;
+ if (i >= MAX_INFOS)
+ i = 0;
+ }
+ if (i == curr_msg)
+ error(1, 0, "Msg info table is full! Probably, many packets were lost.");
+ else
+ curr_msg = i;
+
frame.can_id = opt.id;
frame.can_dlc = 2;
- memcpy(frame.data, &curr_msg, sizeof(curr_msg));
+ idx = curr_msg;
+ memcpy(frame.data, &idx, sizeof(idx));
mi = frame2info(&frame);
+ mi->id = frame.can_id;
+ mi->length = frame.can_dlc;
get_tstamp(&mi->ts_sent);
ret = write(socket, &frame, sizeof(frame));
return ret;
}
+void msg_info_free(struct msg_info *mi)
+{
+ mi->id = 0;
+}
+
static inline void get_next_timeout(struct timespec *timeout)
{
struct timespec now;
static struct timespec last = {-1, 0 };
clock_gettime(CLOCK_MONOTONIC, &now);
-
+
if (last.tv_sec == -1)
last = now;
if (opt.period_us != 0) {
while (last.tv_nsec >= 1000000000) {
last.tv_nsec -= 1000000000;
last.tv_sec++;
- }
+ }
timespec_subtract(timeout, &last, &now);
} else if (opt.timeout_ms != 0) {
timeout->tv_sec = opt.timeout_ms/1000;
/* these settings may be modified by recvmsg() */
iov.iov_len = sizeof(*frame);
msg.msg_namelen = sizeof(addr);
- msg.msg_controllen = sizeof(ctrlmsg);
+ msg.msg_controllen = sizeof(ctrlmsg);
msg.msg_flags = 0;
nbytes = recvmsg(s, &msg, 0);
mi->ts_rx_final_kern = ts_kern;
mi->ts_rx_final = ts_user;
- print_msg_info(mi);
+ if (opt.histogram_fn)
+ histogram_add(&histogram, get_msg_latency_us(mi));
+
+ if (0 && !opt.file)
+ print_msg_info(mi);
+ msg_info_free(mi);
}
void *measure_thread(void *arg)
struct timespec timeout;
struct sockaddr_can addr;
sigset_t set;
- int count = 0;
unsigned msg_in_progress = 0;
MEMSET_ZERO(pfd);
-
+
for (i=0; i<num_interfaces; i++) {
if ((s = socket(PF_CAN, SOCK_RAW, CAN_RAW)) < 0)
error(1, errno, "socket");
×tamp_on, sizeof(timestamp_on)) < 0)
error(1, errno, "setsockopt SO_TIMESTAMP");
-// const int dropmonitor_on = 1;
-// if (setsockopt(s, SOL_SOCKET, SO_RXQ_OVFL,
-// &dropmonitor_on, sizeof(dropmonitor_on)) < 0)
-// error(1, errno, "setsockopt SO_RXQ_OVFL not supported by your Linux Kernel");
+ const int dropmonitor_on = 1;
+ if (setsockopt(s, SOL_SOCKET, SO_RXQ_OVFL,
+ &dropmonitor_on, sizeof(dropmonitor_on)) < 0)
+ error(1, errno, "setsockopt SO_RXQ_OVFL not supported by your Linux Kernel");
pfd[i].fd = s;
if (i == 0)
- pfd[i].events = POLLIN | POLLERR | (opt.period_us == 0 ? POLLOUT : 0);
+ pfd[i].events = POLLIN | POLLERR | ((opt.period_us == 0 && !opt.oneattime) ? POLLOUT : 0);
else
pfd[i].events = POLLIN;
}
do { \
ret = send_frame(pfd[0].fd); \
if (ret != sizeof(struct can_frame)) \
- error(1, errno, "send_frame"); \
+ error(1, errno, "send_frame (line %d)", __LINE__); \
+ count++; \
msg_in_progress++; \
} while (0)
+ if (opt.oneattime) {
+ SEND();
+ count = 1;
+ }
+
while (!finish_flag &&
(opt.count == 0 || count < opt.count || msg_in_progress != 0)) {
+
get_next_timeout(&timeout);
+ //printf("ppoll"); fflush(stdout);
ret = ppoll(pfd, num_interfaces, &timeout, NULL);
+ //printf("=%d\n", ret);
switch (ret) {
case -1: // Error
if (!INTERRUPTED_SYSCALL(errno))
break;
case 0: // Timeout
if (opt.period_us) {
- if (opt.count == 0 || count++ < opt.count) {
+ if (opt.count == 0 || count < opt.count) {
SEND();
- } else {
- error(1, 0, "poll timeout");
}
+ } else {
+ error(1, 0, "poll timeout");
}
break;
default: // Event
process_tx(pfd[0].fd);
}
if (pfd[0].revents & POLLOUT) {
- if ((opt.count == 0 || count++ < opt.count) &&
- !opt.oneattime) {
+ if (opt.count == 0 || count < opt.count)
SEND();
- }
}
pfd[0].revents = 0;
process_final_rx(pfd[i].fd);
msg_in_progress--;
pfd[i].revents = 0;
- if ((opt.count == 0 || count++ < opt.count) &&
+ if ((opt.count == 0 || count < opt.count) &&
opt.oneattime) {
SEND();
}
{ "device", 'd', POPT_ARG_ARGV, &opt.interface, 'd', "Interface to use. Must be given two times (tx, rx) or three times (tx, rx1, rx2)", "interface" },
{ "count", 'c', POPT_ARG_INT|POPT_ARGFLAG_SHOW_DEFAULT, &opt.count, 0, "The count of messages to send, zero corresponds to infinity", "num"},
{ "id", 'i', POPT_ARG_INT|POPT_ARGFLAG_SHOW_DEFAULT, &opt.id, 0, "CAN ID of sent messages", "id"},
- { "period", 'p', POPT_ARG_INT|POPT_ARGFLAG_SHOW_DEFAULT, &opt.period_us, 0, "Period for sending messages or zero (default) to send as fast as possible", "us"},
- { "timeout",'t', POPT_ARG_INT|POPT_ARGFLAG_SHOW_DEFAULT, &opt.timeout_ms,0, "Timeout when period is zero", "ms"},
- { "oneattime",'o', POPT_ARG_NONE, &opt.oneattime,0, "Send the next message only when the previous was finally received"},
- { "verbose",'v', POPT_ARG_NONE, NULL, 'v', "Send the next message only when the previous was finally received"},
+ { "period", 'p', POPT_ARG_INT|POPT_ARGFLAG_SHOW_DEFAULT, &opt.period_us, 0, "Period for sending messages or zero (default) to send as fast as possible", "us"},
+ { "timeout",'t', POPT_ARG_INT|POPT_ARGFLAG_SHOW_DEFAULT, &opt.timeout_ms,0, "Timeout when period is zero", "ms"},
+ { "oneattime",'o', POPT_ARG_NONE, &opt.oneattime,0, "Send the next message only when the previous was finally received"},
+ { "verbose",'v', POPT_ARG_NONE, NULL, 'v', "Send the next message only when the previous was finally received"},
+// { "file", 'f', POPT_ARG_STRING, &opt.file, 0, "File where to store results", "filename"},
+ { "histogram", 'h', POPT_ARG_STRING, &opt.histogram_fn, 0, "Store histogram in file", "filename"},
POPT_AUTOHELP
{ NULL, 0, 0, NULL, 0 }
};
{
int c;
poptContext optCon; /* context for parsing command-line options */
-
+
optCon = poptGetContext(NULL, argc, argv, optionsTable, 0);
//poptSetOtherOptionHelp(optCon, "[OPTIONS]* <port>");
error(1, 0, "%s: %s\n",
poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
poptStrerror(c));
-
+
if (num_interfaces < 2 || num_interfaces > 3)
error(1, 0, "-d option must be given exactly 2 or 3 times");
+ if (opt.oneattime && opt.period_us)
+ error(1, 0, "oneattime and period cannot be specified at the same time");
+
poptFreeContext(optCon);
return 0;
pthread_t thread;
sigset_t set;
int ret;
+ FILE *fhist;
parse_options(argc, argv);
-
+
mlockall(MCL_CURRENT | MCL_FUTURE);
signal(SIGINT, term_handler);
signal(SIGTERM, term_handler);
+ if (opt.histogram_fn) {
+ histogram_init(&histogram, 1000000, 1);
+ fhist = fopen(opt.histogram_fn, "w");
+ if (fhist == NULL)
+ error(1, errno, "open %s", opt.histogram_fn);
+ }
+
pthread_create(&thread, 0, measure_thread, NULL);
- while (!finish_flag) {
- sleep(1);
+ while (!finish_flag && (opt.count == 0 || count < opt.count)) {
+ if (1 || opt.file) {
+ printf("\rMessage %d", count);
+ fflush(stdout);
+ }
+ usleep(100000);
}
+ if (1 || opt.file)
+ printf("\rMessage %d\n", count);
pthread_join(thread, NULL);
+ if (opt.histogram_fn) {
+ histogram_fprint(&histogram, fhist);
+ fclose(fhist);
+ }
+
return 0;
}
projects / can-benchmark.git / blobdiff